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Asked by jean499toys on 10 Jul 2024.
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Roman Lapuente answered on 10 Jul 2024:
That is a very simple yet complicated and interesting question.
Yes, some particles will have no mass. The most famous one is the photon, which is the particle the light is made of.
Three interesting facts about photons:
– They’re the fastest particle in universe as they move at the speed of light. In theory, nothing can go faster than light. If anything wanted to move faster, it would need an infinite amount of energy which is impossible.
– The closer the speed of a particle is to the speed of light, the slower the time passes. It’s the same for human, which is why astronauts age a bit slower when they’re in space as they are travelling at crazy speeds!.
– They are both particles (there are a physical thing) but also waves (meaning that they behave as sound or the waves in the see). This is the fundamental concept for quantum physics and is one of the greatest discoveries in modern science.Other particles without mass are graviton and gluon, which I don’t know much about I have to say
It is a complicated topic, but if you want more details I’ll be happy to provide you with more!
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Martin McCoustra answered on 10 Jul 2024:
Yes… The best known is the photon… a particle of light! There’s a long story associated with the wave properties of light (e.g., diffraction, refraction etc.) and the particle properties (e.g., electronic excitation and photoelectric effect). So-called wave-particle duality which lies at the core of quantum theory.
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Marianne Morris answered on 10 Jul 2024:
I think it’s very hard to prove that something is truly massless, however there are some particles that are believed to have zero mass, e.g. photons and gluons. These are both force carriers – gluons are associated with the strong nuclear force that works to hold the positively charged protons in the nucleus of an atom together, when their like charges want to repel. Photons are associated with the electromagnetic force (the force that wants to push the same protons apart).
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